To me it's not so surprising, they've done other kinds of viral and guerilla marketing. Last one was download your info from competing chat bots and let you figure out how much they know about you. My opinion is those are smart moves that can don't cost a lot of money for the reach it gets them. Also considering the US is a large market and their mission of replacing the Apple / Google ecosystems with better alternatives kind of requires large markets to succeed, this (again) shows thet are not only in the business to serve Europeans.